There are notable differences with the drawing after research - the lower jaw in particular is much more distinct and strong. I drew the skull with the jaw very slightly open, though, leading to some slight difference in the soft tissue around the mouth in the fully rendered image than if the jaw were completely closed.

This was a hell of a lot of fun, and I am glad I stuck through it to the end!

Excellent! I can definitely see the improvements in the jaw and around the eyes!

All I can see is that the nostrils are sitting rather low. I know this is simply Lecca's design, but the tip of the jaw that holds the upper canines seems incredibly fragile as a result for such a big muscular jaw; if she were to bite down hard onto something (which I take it she can, seeing as you based her off of a hyena and a carnotaurus) she looks like she might actually break her upper jaw in the middle there. It may also be because of the hole you drew next to the nostril holes; if you look at the hyena's skull, especially from the side, you'll see that it's all a rather solid whole.

This is only speculatory in its design - I could rework the skull in different small ways to get different results. There should be more to the premaxillary bones that house the maxillary incisors, though, certainly - I am not happy with the nares' placement in the new improved image.

I appreciate the detailed comment, and thank you for the kick in the pants to do this with your challenge!